The quote from P.G. Wodehouse's "Thank You, Jeeves" reflects the speaker's changed demeanor over time. It indicates a shift from youthful enthusiasm and impulsiveness to a more cautious and skeptical outlook. This transformation likely stems from life experiences that have influenced the speaker's perspective and emotional state.

The speaker recognizes how the trials of life have altered his character, illustrating a common theme of growth and maturity. The contrast between his past self and present self highlights a loss of innocence and a more serious approach to situations, underscoring how experiences can reshape one's personality and view of the world.